The Director may issue rules and regulations and orders as may be needed to carry out this Act. Further, the Director may establish by regulation fees for the inspection and certification of nurseries, nursery stock dealers, greenhouses and for other inspections, certifications and permits. These fees will be paid into the Pesticide Control Fund to be used for the administration of this Act. Before adopting or revising such fee regulations, the Director must hold a public hearing. Notice of such hearing shall be made at least 30 days prior to such a public hearing.